5. Optional interface
46
A signal is inputted to the signal input circuit by short-circuiting or opening the input terminal and the
COM terminal. Short-circuiting is effected by means of a contact (such as a relay or a switch) or a
noncontact (such as a transistor or an open-collector TTL).
Input equivalent circuit
TTL open collector output
*
IC=0.5mA
IN
short-circuited when IN is ‘H’
toggle
relay
transistor
IN
approx.
Logic Negative Positive
Open
OFF
ON
Short
ON
OFF
Vcc
←
inside
COM
push
switch
+5V
1
outside
→
M252A
Содержание M252A
Страница 1: ...INTELLIGENT DOT IMPACT PRINTER M252A Operation manual Rev 1 02 ...
Страница 29: ...3 Connecting with indicators 18 M E M O ...
Страница 53: ...4 For greater use of the printer 42 M E M O ...
Страница 91: ...7 Troubleshooting 80 M E M O ...
Страница 101: ...Appendix 90 External views ...